it's not about styles, it's UX, stupid encoding questions, every time you open it, not able to handle big enough spreadsheets, and tons of problems like this.
Also changing document formatting is a pain, i do not want to do it manually , i want ai to do it for me.
On styles, office packages are more often an external communication tool, send a doc, report, to a customer, prospect etc, How can you make the doc ascetically good, if entire office package tools looks like from 90s, scroll is lagging, etc.
Our local Amazon equivalent here got recently a partial mobile app redesign. Application went by gamification path and it got: "challenges", worthless coupons, affiliated links program to pester your friends with. Plus, independent "notifications" in form of a banner for those stubborn users who refused to agree for "personalization". And there's also information about how much you "saved" subscribing to extra delivery service without which it's impossible to get your package on time.
All of this pointless shit but for more than 20 - twenty years no user is able to change their account handle.
I quite like that Libreoffice let's me disable the confusing "strip" layout that MS Office pushes on everyone.